Convert mp3 to m4b format navigate to this web-site: best mp3 to m4b converterform mother convert mp3 to m4b site A software for Apple Macintosh systems. It can convert selected audio formats to Mp3. Supports a huge variety of audio formats, and should be your first choice if you are using a Macintosh computer. MP4 is one of the most popular file formats for audio and video, its success based mainly on the success of Apple devices and the iTunes store. There are several file extensions that are used with this format, including .mp4. m4a. m4b, and others. On the other hand, MP3 is the most widely supported audio format, so you may want to convert MP4 to MP3 to have your songs playable on any device._________________freeware convert mp3 to m4b download: batch mp3 to m4b converter